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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
PREREQUISITES
MAKE SURE THE AIRPLANE IS IN THIS CONFIGURATION: ELECTRICAL POWER IS ON (AMM 24-22-00/201) ENGINE DRY MOTOR AND/OR START (AMM 71-00-00/201) CAN BE NECESSARY.
NOTE:____ THIS CONDITION CAN BE FOUND DURING POST/PRE
FLIGHT CHECK OR MAINTENANCE, AND IS NOT
REPORTED BY THE FLIGHT CREW. IT CAN OCCUR ON
N1 AND N2 ROTORS LOW/HIGH TIME ENGINES. IT CAN CORRECT ITSELF
LOCKED TOGETHER BY ENGINE COOL COWN.
FREE. THERE IS NO TIME LIMIT FOR THESE CONDITIONS:
. MCDS SHOW NO DAMAGE.
. NO INTERNAL DAMAGE FOUND
BY BORESCOPE INSPECTION
OR VISUAL INSPECTION.
N1 And N2 Rotors Locked Together
Figure 105
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K73210
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
POWER PLANT - TROUBLE SHOOTING (ENGINE CONTROLS)
________________________________________________
1. Trouble Symptom Listing
_______________________
Trouble Symptom_______________ Begin Trouble Shooting
Thrust Lever Binding Fig. 101 Block 1 Thrust Control System Has Fig. 102 Block 1
Lost Motion Start Lever Binding Fig. 103 Block 1 Thrust Lever Does Not Move Fig. 104 Block 1
During Autothrottle Operation
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
THRUST LEVER BINDING
PREREQUISITES: NONE
NO
0A DO THE THRUST LEVER
FRICTION TEST (AMM 76-11-00/
501).
WAS THE LOAD MORE THAN
6.5 POUNDS?
YES
YES
1 DO A CHECK OF THE STRUT DRUM CONTROL BOX FOR SIGNS OF
COLLECTED WATER OR ICE.
IS THERE SIGNS OF WATER OR ICE?
NO
YES
2 DISCONNECT THE THRUST CON-TROL PUSH-PULL CABLE FROM THE
MEC FUEL CONTROL BOX RACK.
DOES THE THRUST LEVER NOW MOVE FREELY?
NO
NO
3 DISCONNECT THE UPPER END ICE.
23 REPLACE THE THRUST CONTROL PUSH-PULL CABLE (AMM 76-11-07/401).
OF THE PUSH-PULL CABLE FROM THE STRUT DRUM CONTROL BOX RACK.
DOES THE CABLE CORE MOVE FREELY IN THE TUBE?
YES SEE SHEET 2 (BLOCK 4)
Thrust Lever Binding
Figure 101 (Sheet 1)
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FROM SHEET 1 (BLOCK 3) YES
4
DECREASE THE TENSION IN THE FORWARD LOOP OF THE APPLI-CABLE THRUST CONTROL CABLES.
DOES THE THRUST LEVER NOW MOVE FREELY?
YES
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
NO NO
12 DO A CHECK FOR 0.01-0.04-INCH CLEARANCE BETWEEN THE RUBSTRIPS ON THE CONTROL STAND COVER AND THE THRUST LEVER.
IS THE CLEARANCE CORRECT?
YES YES
13 EXAMINE THE PULLEYS IN THE THRUST CONTROL CABLE FORWARD LOOP.
IS A PULLEY CHAFING ON THE PULLEY BRACKET?
NO
YES
NO
27 REPLACE THE PULLEY(S).
NO
5 DECREASE THE TENSION IN
28 REPLACE THE AUTOTHROTTLE THE AFT LOOP OF THE APPLICABLE TORQUE SWITCH MECHANISM THRUST CONTROL CABLES. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-300 400 500 AMM 飞机维护手册 动力装置 POWER PLANT 2(33)
